Fuwei Zhuge | Osaka University (original) (raw)
Uploads
Papers by Fuwei Zhuge
Thin Solid Films, 2009
ABSTRACT Tantalum pentoxide films were deposited on BK7 glass substrates using oxygen plasma enha... more ABSTRACT Tantalum pentoxide films were deposited on BK7 glass substrates using oxygen plasma enhanced pulsed laser deposition (OPE-PLD). X-ray diffraction, atomic force microscopy, ultraviolet–visible–near infrared scanning spectrophotometry, and spectroscopic ellipsometry were used to characterize the crystallinity, microscopic morphology and optical properties of films. Results show that the film roughness increased with the increase of oxygen pressure, and decreased with the application of OPE. Meanwhile the use of oxygen plasma in a 2 Pa O2 pressure resulted in the transmittance of the thin film of 91.8% at its peak position (the transmittance of bare substrate). Moreover, the root-mean-square roughness as low as 0.736 nm, and refractive index of 2.18 at 633 nm wavelength, close to the refractive index of bulk Ta2O5 (~ 2.20 at 633 nm wavelength), were obtained.
Nanotechnology, 2011
We report the fabrication and characterization of a TiO2-In2S3 core-shell nanorod array structure... more We report the fabrication and characterization of a TiO2-In2S3 core-shell nanorod array structure for application of semiconductor-sensitized solar cells. Hydrothermally synthesized TiO2 nanorod arrays on FTO glass substrates are functionalized with a uniform In2S3 shell layer by using the successive ion layer adsorption and reaction (SILAR) method. This low-cost technique promotes a uniform deposition of In2S3 nanoshells on the surface of TiO2 nanorods, thus forming an intact interface between the In2S3 shell and TiO2 core. Results show that the thickness of In2S3 shell layers as well as the visible light absorption threshold can be effectively controlled by varying the coating cycles during the SILAR process. The best reproducible performance of the sandwich solar cell using the TiO2-In2S3 core-shell nanorod arrays as photoelectrodes was obtained after 30 SILAR cycles, exhibiting a short-circuit current (Isc) of 2.40 mA cm - 2, an open-circuit voltage (Voc) of 0.56 V, a fill factor (ff) of 0.40 and a conversion efficiency (η) of 0.54%, respectively. These results demonstrate a feasible and controllable route towards In2S3 coating on a highly structured substrate and a proof of concept that such TiO2-In2S3 core-shell architectures are novel and promising photoelectrodes in nanostructured solar cells.
Thin Solid Films, 2009
ABSTRACT Tantalum pentoxide films were deposited on BK7 glass substrates using oxygen plasma enha... more ABSTRACT Tantalum pentoxide films were deposited on BK7 glass substrates using oxygen plasma enhanced pulsed laser deposition (OPE-PLD). X-ray diffraction, atomic force microscopy, ultraviolet–visible–near infrared scanning spectrophotometry, and spectroscopic ellipsometry were used to characterize the crystallinity, microscopic morphology and optical properties of films. Results show that the film roughness increased with the increase of oxygen pressure, and decreased with the application of OPE. Meanwhile the use of oxygen plasma in a 2 Pa O2 pressure resulted in the transmittance of the thin film of 91.8% at its peak position (the transmittance of bare substrate). Moreover, the root-mean-square roughness as low as 0.736 nm, and refractive index of 2.18 at 633 nm wavelength, close to the refractive index of bulk Ta2O5 (~ 2.20 at 633 nm wavelength), were obtained.
Nanotechnology, 2011
We report the fabrication and characterization of a TiO2-In2S3 core-shell nanorod array structure... more We report the fabrication and characterization of a TiO2-In2S3 core-shell nanorod array structure for application of semiconductor-sensitized solar cells. Hydrothermally synthesized TiO2 nanorod arrays on FTO glass substrates are functionalized with a uniform In2S3 shell layer by using the successive ion layer adsorption and reaction (SILAR) method. This low-cost technique promotes a uniform deposition of In2S3 nanoshells on the surface of TiO2 nanorods, thus forming an intact interface between the In2S3 shell and TiO2 core. Results show that the thickness of In2S3 shell layers as well as the visible light absorption threshold can be effectively controlled by varying the coating cycles during the SILAR process. The best reproducible performance of the sandwich solar cell using the TiO2-In2S3 core-shell nanorod arrays as photoelectrodes was obtained after 30 SILAR cycles, exhibiting a short-circuit current (Isc) of 2.40 mA cm - 2, an open-circuit voltage (Voc) of 0.56 V, a fill factor (ff) of 0.40 and a conversion efficiency (η) of 0.54%, respectively. These results demonstrate a feasible and controllable route towards In2S3 coating on a highly structured substrate and a proof of concept that such TiO2-In2S3 core-shell architectures are novel and promising photoelectrodes in nanostructured solar cells.